KAIVALYA UPANISHAD · 9

स एव सर्वं यद्भूतं यच्च भव्यं सनातनम् ।
ज्ञात्वा तं मृत्युमत्येति नान्यः पन्था विमुक्तये ॥ ९॥

sa eva sarvaṃ yadbhūtaṃ yacca bhavyaṃ sanātanam ।
jñātvā taṃ mṛtyumatyeti nānyaḥ panthā vimuktaye ॥ 9॥

He only is all things that exist or will hereafter exist. He only is eternal. Having known Him, one crosses death. There is no other path to salvation.

K. Narayanasvami Aiyar · Thirty Minor Upanishads (1914), pp. 31–33